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<h3>QTopo - Calibration direction coverage</h3>
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With the <i>Coverage</i> button you can check the spread of the data
directions, ie, how well they cover all possible directions.
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The map represents the solid angle. The equator corresponds to
direction at zero
inclination, the upper pole is +90 and the lower pole -90.
The mid vertical line corresponds to azimuth 0.
East directions are on the
right side, west ones on the left side.
White spots represent directions of poor coverage.
The whiter the worse.
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The map of the coverage does not include data with the <i>Skip</i> flag.
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<img src=../images/qtcalibcover.jpg>
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<a href="qtcalib.htm">Calibration</a><br>
<a href="qtcalibtable.htm">Table</a><br>
<a href="qtcalibdata.htm">Download</a><br>
<a href="qtcalibcompute.htm">Computation</a><br>
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<a href=qtcalibbuttons.htm>Command buttons</a>
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